An animal fiber that tribal weavers sometimes use for a rug's foundation in place of wool, as in Gabbeh and Quchan rugs, while the pile itself stays wool. Together with mohair, camel hair and cow hair it is among the less common rug materials, seen mostly in tribal work, and it also turns up in some flat-woven kilims.
A flat-woven rug with no pile, traditionally made in Turkey, Iran, Afghanistan, and the Balkans. Colored weft threads are interlaced with the warp without knots, so both sides look alike. The fibers are typically wool, cotton, or goat hair, and natural dyes often give slight shade variations that are normal, not flaws. Its low profile clears doors easily, and it can hang as wall art. In a knotted rug, "kilim" also names the flat-woven band at each end, where extra weft rows secure the ends beside the fringe.
The skeleton of a hand-knotted rug: the warp and weft threads on which every pile knot is tied. Cotton is the usual material in city and village rugs because it barely stretches or shrinks with humidity and is rigid enough to knot through easily. Wool or goat hair is typical of tribal rugs, whose weavers can use one material for both foundation and pile; it gives more character but a less straight shape. Silk, being finer, permits very high knot counts. The fringes at each end are the foundation's exposed warp ends, so they reveal its material.
A rug base in which the warp and weft threads are wool instead of cotton. It is typical of tribal rugs such as Baluchi, Turkoman and Gabbeh (some use goat hair instead), turns up in some Qashqai, Shiraz and small Bakhtiari pieces, and is common in older village and tribal rugs; experts treat cotton as the norm for rugs made after about the 1930s, once machine-spun cotton became widely available. Wool's soft, less rigid structure gives the design a fluid, warm character, and the fringes are sometimes braided or in different colors. The drawback is that wool shrinks and stretches with humidity, so these rugs tend to be less straight than cotton-based ones.